Expression.Coalesce Method (Expression, Expression)
Creates a BinaryExpression that represents a coalescing operation.
Assembly: System.Core (in System.Core.dll)
'Declaration Public Shared Function Coalesce ( _ left As Expression, _ right As Expression _ ) As BinaryExpression
public static BinaryExpression Coalesce( Expression left, Expression right )
The Method property of the resulting BinaryExpression is nulla null reference (Nothing in Visual Basic) and both IsLifted and IsLiftedToNull are set to false. The Type property is equal to the result type of the coalescing operation. The Conversion property is nulla null reference (Nothing in Visual Basic).
The following rules determine the result type:
If left.Type represents a nullable type and right.Type is implicitly convertible to the corresponding non-nullable type, the result type is the non-nullable equivalent of left.Type.
Otherwise, if right.Type is implicitly convertible to left.Type, the result type is left.Type.
Otherwise, if the non-nullable equivalent of left.Type is implicitly convertible to right.Type, the result type is right.Type.
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
Supported in: Windows Phone OS 7.0
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.